/Engine/Plugins/Developer/Concert/ConcertSync/ConcertSyncCore/Source/ConcertSyncCore/Public/ConcertSyncSessionDatabase.h
Get the head revision in this database for the given package name.
True if the head revision was resolved, false otherwise.
bool GetPackageHeadRevision ( const [FName](API\Runtime\Core\UObject\FName) InPackageName, int64 & OutRevision ) const